1// Copyright 2019 Google LLC.
2// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3#include "tools/fiddle/examples.h"
4// HASH=7822d78f5cacf5c04267cbbc6c6d0b80
5REG_FIDDLE(Pixmap_writable_addrF16, 256, 64, false, 0) {
6void draw(SkCanvas* canvas) {
7    SkImageInfo info = SkImageInfo::Make(1, 2, kRGBA_F16_SkColorType, kPremul_SkAlphaType);
8    uint16_t storage[2][4];
9    SkPixmap pixmap(info, storage[0], sizeof(uint64_t));
10    SkIRect topPixelBounds = {0, 0, 1, 1};
11    pixmap.erase({ 0.65f, 0.45f, 0.25f, 1 }, &topPixelBounds);
12    SkIRect bottomPixelBounds = {0, 1, 1, 2};
13    pixmap.erase({ 0.25f, 0.65f, 0.45f, 1 }, &bottomPixelBounds);
14    SkBitmap bitmap;
15    canvas->scale(20, 20);
16    bitmap.installPixels(pixmap);
17    canvas->drawImage(bitmap.asImage(), 0, 0);
18    uint16_t* pixel2 = pixmap.writable_addrF16(0, 1);
19    for (int i = 0; i < 4; ++i) {
20        pixel2[i] = storage[0][i];
21    }
22    bitmap.installPixels(pixmap);
23    canvas->drawImage(bitmap.asImage(), 4, 0);
24}
25}  // END FIDDLE
26